Viaducts on the stretch Requejo- La Canda of the access roads to Galicia - Spain

Abstract

The main masonry works of the stretch Requejo- La Canda of the Access Roads to Galicia are four viaducts that span over deep valleys. The four viaducts have 37 spans each of 32.2 m length. The bridge decks are formed by prefabricated beams, in V section, joined by means of an upper slab made on the site, which in its turn establishes continuity with the adjoining bridge decks. After every third or fourth span expansion joints have been placed. The maximum height of the viaducts is 70 m. The construction of the viaducts has been carried out in quite a short time in spite of the fact that most of it has been undertaken during the winter months, with frequent snow falls and low temperatures, as the site is located in the mountains at a height that varies between 900 m and 1,300 m.